Arthropods from region Ottawa (Eastern Ontario, Ontario, Canada) Arachnida Lamarck, 1801 Arachnids | 24 32 23 | Families Genera Species | Taxom
| Branchiopoda Latreille, 1817 Branchiopods, Brine shrimps, Daphnia, Fairy shrimps and Water fleas, Phyllopods | 3 3 3 | Families Genera Species | Taxom
| Chilopoda Latreille, 1817 Centiped, Centipede, Centipedes, Centipeds, Chilopods | 2 6 4 | Families Genera Species | Taxom
| Diplopoda De Blainville in Gervais, 1844 Diplopods, Millepedes, Millipede, Millipedes | 6 8 8 | Families Genera Species | Taxom
| Entognatha Stummer-Traunfels, 1891 Entognathids | 7 13 5 | Families Genera Species | Taxom
| Insecta Linnaeus, 1758 Insects, True insects | 243 1010 1459 | Families Genera Species | Taxom
| Malacostraca Latreille, 1802 Higher Crustaceans, Malacostracans | 12 15 21 | Families Genera Species | Taxom
| Maxillopoda Dahl, 1956 Maxillopods | 3 3 3 | Families Genera Species | Taxom
| Ostracoda Latreille, 1802 Mussel shrimps, Ostracods, Seed Shrimps | 10 17 23 | Families Genera Species | Taxom
| Trilobita ♰ Walch, 1771 Trilobites | 8 12 9 | Families Genera Species | Taxom
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